摘要
【目的】针对高浑浊度矿井水处理技术存在处理工序长、超滤(UF)膜进水水质要求高、膜污染严重的问题,采用短流程超滤膜化学反应器(MCR)组器处理高浑浊度矿井水。【方法】在保留短流程超滤MCR工艺精简、集成度高、占地面积小的优势基础上,对短流程超滤MCR技术的抗污染膜组器型式进行改进,探究高效膜污染控制组器型式;并对改进后组器的运行参数开展试验研究,通过优化运行通量、系统回收率、运行周期、反洗通量4个运行参数,考察不同运行条件对膜污染控制效果,从而确定抗污染膜组器的稳定运行参数,通过进水悬浮物浓度,考察短流程超滤MCR组器的进水条件。【结果】结果表明,短流程超滤MCR组器中振动模式的抗污染性能优于曝气模式,跨膜压差(TMP)低于曝气模式0.16~0.26 k Pa/d。而在振动模式中,线性振动模式TMP低于旋转振动模式0.5 k Pa/d,表明线性振动模式抗污染能力强,且线性振动模式的吨水能耗为0.03 k W·h、水阻能耗占比为28.8%,均优于旋转振动模式。此外,线性振动模式短流程超滤MCR组器在运行通量≤40L/(m^(2)·h),系统回收率≤97%,运行周期为45 min,反洗通量为60 L/(m^(2)·h)条件下,能保证膜抗污染效果,短流程超滤MCR组器进水耐受悬浮物质量浓度达到2000 mg/L,运行参数调整对产水水质无显著影响。【结论】振动模式短流程超滤MCR组器可有效减少处理工艺流程,放宽UF膜进水水质要求,缓解UF膜运行过程中膜污染的情况,可为高浑浊度矿井水工艺改造提供技术指导。
[Objective]Addressing the challenges of long treatment processes,stringent influent water quality requirements for ultrafiltration(UF)Membrane Coagulation Reactor(MCR)membranes,and severe membrane fouling in high-turbidity mine water treatment technologies,this test employs a short-flow UF MCR membrane unit for treating high-turbidity mine water.[Methods]While retaining the advantages of simplicity,high integration,and small footprint associated with the short-flow UF MCR process,the study also improved the antifouling membrane units design of the short-flow technology.The article explored the type of high-efficiency antifouling membrane unit and carried out a study on the operating parameters of the improved unit.Through the optimization of four operating parameters,such as operating flux,system recovery rate,operating period and backwash flux,the control effect of operating conditions on membrane contamination was investigated,and the stable operating parameters of the unit were given.The influent conditions of the short-flow UF MCR membrane unit were also investigated by the concentration of suspended solids in influent.[Results]The result indicated that the vibration mode outperforms the aeration mode in terms of antifouling performance,with a transmembrane pressure(TMP)increase rate lower by 0.16 kPa/d to 0.26 kPa/d compared to the aeration mode.Within the vibration modes,the linear vibration mode exhibited a TMP increase rate lower by 0.5 kPa/d than the rotary mode,suggesting stronger antifouling capabilities of the linear mode.Additionally,the linear mode consumed 0.03 kW·h per ton of water and had a water resistance energy consumption ratio of 28.8%,both superior to the rotary mode.In addition,the linear vibration mode could maintain effective membrane antifouling performance under a flux of≤40 L/(m^(2)·h),a system recovery rate of≤97%,an operating cycle of 45 minutes,and a backwash flux of 60 L/(m^(2)·h).The short-flow UF MCR module tolerated suspended solids mass concentration up to 2000 mg/L,and adjustments to operating parameters had no significant impact on the quality of the treated water.[Conclusion]Therefore,the vibration mode short-flow UF MCR membrane unit can effectively reduce treatment processes,relax the water quality requirements for UF membrane influent,and alleviate membrane fouling issues during operation,providing technical guidance for the retrofitting of high-turbidity mine water treatment processes.
作者
刘旭东
黄江龙
郭鹏
吴勇生
付莹
安宁
LIU Xudong;HUANG Jianglong;GUO Peng;WU Yongsheng;FU Ying;AN Ning(Taiyuan Coal Gasification<Group>Co.,Ltd.,Taiyuan 030000,China;Beijing Huateyuan Technology Co.,Ltd.,Beijing 101400,China;Beijing OriginWater Technology Co.,Ltd.,Beijing 100080,China;Shanxi Yangquan Yinying Coal Industry Co.,Ltd.,Yangquan 045000,China)
出处
《净水技术》
2025年第3期123-134,共12页
Water Purification Technology
基金
国家重点研发计划项目(2022YFC3203101)。
